I have two new 4 week old pigs, both female, Piglet and Tanto. Upon close inspection, one had a little scab on her rear. One morning I woke up, and it is now more like a sore (although it seems to now be scabbing over a bit) Could this be a bite wound? I have seen Piglet nip at Tanto on occasion too! Should I put my fears to rest or are these two piggies not meant to be?